Xiao Liang created HDFS-15342:
---------------------------------

             Summary: Handle more generic exceptions in the threads created in 
org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsVolumeList#addBlockPool
                 Key: HDFS-15342
                 URL: https://issues.apache.org/jira/browse/HDFS-15342
             Project: Hadoop HDFS
          Issue Type: Improvement
          Components: datanode
    Affects Versions: 2.9.2, 3.2.0, 2.9.1, 3.1.0, 2.9.0
            Reporter: Xiao Liang


*++*++In 
org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsVolumeList#addBlockPool,
 threads will be created for each volume for adding block pools. In the thread, 
IOException will be caught and handled, however, there can be other types of 
exceptions(for example 
[HDFS-14582|https://issues.apache.org/jira/browse/HDFS-14582]), without 
catching them, the thread can terminate without any error log, the exception 
info will be only in stderr but probably not noticed and unsearchable from log, 
this could make it difficult to investigate related issues.

 



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